Attachment #391296 for bug #531846

View | Details | Raw Unified | Return to bug 531846 | Differences between

and this patch




  status->__invalid = status->__denorm = status->__zdiv = status->__ovrfl = status->__undfl =
    status->__precis = status->__stkflt = status->__errsumm = 0;

  uint32_t *mxcsr = &uc->uc_mcontext->__fs.__fpu_mxcsr;
  *mxcsr |= SSE_EXCEPTION_MASK; /* disable all SSE exceptions */
  *mxcsr &= ~SSE_STATUS_FLAGS; /* clear all pending SSE exceptions */
#endif

  *sw &= ~FPU_STATUS_FLAGS;
#endif
#if defined(__amd64__)
  uint16_t *cw = &uc->uc_mcontext.fpregs->cwd;
  *cw |= FPU_EXCEPTION_MASK;

  uint16_t *sw = &uc->uc_mcontext.fpregs->swd;
  *sw &= ~FPU_STATUS_FLAGS;

  uint32_t *mxcsr = &uc->uc_mcontext.fpregs->mxcsr;
  *mxcsr |= SSE_EXCEPTION_MASK; /* disable all SSE exceptions */
  *mxcsr &= ~SSE_STATUS_FLAGS; /* clear all pending SSE exceptions */
#endif

Return to bug 531846

Lines 152-158 Link Here

(-)a/mozilla-release/toolkit/xre/nsSigHandlers.cpp (-4 / +4 lines)
152	status->__invalid = status->__denorm = status->__zdiv = status->__ovrfl = status->__undfl =	152	status->__invalid = status->__denorm = status->__zdiv = status->__ovrfl = status->__undfl =
153	status->__precis = status->__stkflt = status->__errsumm = 0;	153	status->__precis = status->__stkflt = status->__errsumm = 0;
154		154
155	__uint32_t *mxcsr = &uc->uc_mcontext->__fs.__fpu_mxcsr;	155	uint32_t *mxcsr = &uc->uc_mcontext->__fs.__fpu_mxcsr;
156	mxcsr \|= SSE_EXCEPTION_MASK; / disable all SSE exceptions */	156	mxcsr \|= SSE_EXCEPTION_MASK; / disable all SSE exceptions */
157	mxcsr &= ~SSE_STATUS_FLAGS; / clear all pending SSE exceptions */	157	mxcsr &= ~SSE_STATUS_FLAGS; / clear all pending SSE exceptions */
158	#endif	158	#endif
Lines 172-184 Link Here
172	*sw &= ~FPU_STATUS_FLAGS;	172	*sw &= ~FPU_STATUS_FLAGS;
173	#endif	173	#endif
174	#if defined(__amd64__)	174	#if defined(__amd64__)
175	__uint16_t *cw = &uc->uc_mcontext.fpregs->cwd;	175	uint16_t *cw = &uc->uc_mcontext.fpregs->cwd;
176	*cw \|= FPU_EXCEPTION_MASK;	176	*cw \|= FPU_EXCEPTION_MASK;
177		177
178	__uint16_t *sw = &uc->uc_mcontext.fpregs->swd;	178	uint16_t *sw = &uc->uc_mcontext.fpregs->swd;
179	*sw &= ~FPU_STATUS_FLAGS;	179	*sw &= ~FPU_STATUS_FLAGS;
180		180
181	__uint32_t *mxcsr = &uc->uc_mcontext.fpregs->mxcsr;	181	uint32_t *mxcsr = &uc->uc_mcontext.fpregs->mxcsr;
182	mxcsr \|= SSE_EXCEPTION_MASK; / disable all SSE exceptions */	182	mxcsr \|= SSE_EXCEPTION_MASK; / disable all SSE exceptions */
183	mxcsr &= ~SSE_STATUS_FLAGS; / clear all pending SSE exceptions */	183	mxcsr &= ~SSE_STATUS_FLAGS; / clear all pending SSE exceptions */
184	#endif	184	#endif